Hand-attachment supports for sewing machines



March 15, 1960 A. J. MATUZAS HAND-ATTACHMENT SUPPORTS FOR SEWINGMACHINES Filed April 16, 1956 3 Sheets-Sheet JlllllIlIlIIIIIIDZIIIIIIIIIIIIII) IN VEN TOR. Anthony J Mafuzas WITNESSBY 7/{M y GA-IJ-W A TTORNE Y March 15, 1960 2,928,640

HAND-ATTACl-MENT SUPPORTS FOR SEWING MACHINES Filed April 16, 1956 A. J.MATuzAs 3 Sheets-Sheet 2 INVENTOR. Anfhon J Mafuzas Fig.2 By

' ATTORNEY WITNESS March 15, 1960 A. J. MATUZAS 2,928,640

HAND-ATTACHMENT SUPPORTS FOR SEWING MACHINES Filed April 16, less 3Sheets-Sheet 3 mmvroa Anthony J Mafuzas Z TTORNE Y WITNESS Unite States.atent HAND-ATTACHIVIENT SUPPORTS FOR SEWING vMACHINES Anthony J.Matuzas, Union, N.J., assignor to The Singer Manufacturing Company,Elizabeth, N..I., a corporation of New Jersey Application April 16,1956, Serial No. 578,258

2 Claims. (Cl. 248-205) This invention relates to domestic sewingmachines and more particularly to portable sewing machines that may bedriven either by an electric motor or by a hand-turned crank.

Persons who travel or live in remote sections of the world find itdesirable to own a portable sewing machine that can be driven either byan electric motor or by a hand crank. One of the least expensive meansfor providing such an arrangement is to equip a standard sewing machinewith a so-called hand-attachment. In the past some sewing machines havebeen provided with means adapted for mounting a hand-attachment or otherequipment on the machine. For example, US. Patent No. 1,455,391 shows .asewing machine provided with an attachment seat. However, the morerecently manufactured sewing machines, which are primarily intended tobe driven by an electric motor, have not beenprovided with anappropriate attachment seat. Such a machine is shown in US. Patent No.2,063,841. Therefore, the primary object of the present invention is toprovide an improved means for securing a hand-attachment to a modernportable electric motor driven domestic sewing machine. i

Another object of the invention is to provide an improved bracket whichpermits mounting a hand-attachment on the motor-supporting bracket of asewing machine.

With the above and other objects in view, as will hereinafter appear,the invention comprises the devices, combinations and arrangements ofparts hereinafter set forth and illustrated in the accompanying drawingsof a preferred embodiment of the invention, from which the severalfeatures of the invention and the advantages attained thereby, will bereadily understood by those skilled in the art.

The present invention will be clearly understood from a study of thefollowing description and drawings.

In the drawings:

Fig. 1 is a side elevational view of a sewing machine embodying thepresent invention. The sewing machine shown may be driven by ahand-attachment or by an electric motor;

Fig. 2 is an enlarged end elevational view of the sewing machine shownin Fig. 1; 1

Fig. 3 is a sectional view taken substantially along the line 3-3 ofFig. 2;

Fig. 4 is a fragmentary sectionalview taken along the line 44 of Fig. 3;and

Fig. 5 is a perspective view of a support bracket forming part of thepresent invention.

Referring more specifically to the drawings, the invcntion is disclosedas embodied in a sewing machine 16, similar to the machine shown in US.Patent No. 2,063,841, and having a machine frame including a base or bed17 from which rises a bracket-arm standard 18, the upper end of thestandard supporting an overhanging arm 19. Rotatably journaled in theoverhanging arm is a main shaft 21, one end of which carries ahand-wheel 2,928,640 Patented Mar. 15, 1960 22. The hand-wheel 22, in amanner shown in US. Patent No. 1,934,373, may be operatively connectedto or disconnected from the main shaft 21 by means of a handwheel clutch(notshown) controlled by a clutch-screw 23. When the clutch-screw 23 istightened, in a known manner, rotation of the hand-wheel 22 drives thesewing equipped with a rectangularly shaped tongue 33 which,

in a manner shown in US. Patent No. 2,063,841, may be adjustably securedin the groove 32, as by a screw 34 which extends througha vertical slot36 in the lug 31 and is threaded into the tongue 33. In the constructionshown in the drawings (Fig. 4) an arm or leg 37 of an inverted U-shapedbracket 38, which will be fully de-' scribed hereinafter, is interposedbetween the motor-support lug 31 and the tongue 33.

The second means for rotating the hand-wheel 22, shown in Figs. 1 and 2,comprises a so-called hand-attachment indicated generally by numeral 41.Handattachments of the type shown have been used for many years andgenerally comprise a support 42 having terminal ends 43 and 44. Theterminal end 44 is secured by means of screws 46 to the back of ahand-attachment body 47 which has a cover 48 held in place by screws 49.The body 47 and cover 48 rotatably house a gear 51 and a pinion 52. Thegear 51 is driven by a crank lever 53 equipped with a handle 54. Thecrank lever 53 is pivotally held to the gear 51 by means of a post 56andpivot pin 57. The crank lever 53 may selectively be held to a post 58carried by the gear 51 by means of a latch pin 59. The gear 51 drivesthe pinion 52 and the pinion 52 rotates a driver 61, the free end ofwhich carries a pin 62 which pivotally mounts a driver finger 63. Whenthe driver finger 63 is in the position shown by solid lines in Fig. 1,a driving pad 64 enters one of two recesses 66 in the hand-wheel 22,thus driving the handwheel 22 when the handle 54 is used to turn thecrank lever 53. 'When the driver finger 63 is in the position shown bydotted lines in Fig. l, the hand-attachment 41 is incapable of turningthe hand-wheel 22 and the motor 24 may be used to drive the sewingmachine 16.

As previously indicated, the bracket 38 (Fig. 5) has an arm 37 which isformed with a vertically extending groove 72 adapted to receive thepreviously mentioned tongue 33 of the motor 24. Also the arm 37 has avertically extending tongue 73 which is apertured by a vertical slot 76through which passes the screw 34, thereby clamping and supporting boththe arm 37 of the bracket 38 and the motor 24 from the motor-support lug31. The bracket 38 further has a reach 77 merging into a downwardlydisposed head or leg 78 which is provided with a vertically extendingtongue 79having a centrally located threaded hole 81. A screw 82 (Figs.1 and 2), passing through a hole 84 in the terminal 43 of the support42, secures the support 42 to the bracket 38 and thus supports thehand-attachment 41 from the motor support lug 31. It will be noted thatthe slot 76 and screw 34 pass through the arm 37 in a direction that isnormal to the direction in which the hole 81 and screw 82 enter the head78 of the bracket 38.

In order for the hand-attachment 41 to function properly, the center ofthe pinion 52 must coincide with the center of the hand-wheel 22 andmain shaft 21 In other words, the hand-attachment must beproperlypositioned both horizontally and vertically'with respect to thehand-wheel 22. This is best shown in Fig. 1 where the common center lineis designated by the numeral 86. 7

Horizontal coincidence is obtained by properly dimension; ing theposition" of the tongue 79 with respect to the groove 72. Propervertical coincidence is obtained by a pin 88 carried by the bracket 38and having a lower end adapted to engage the upper surface of themotorsupport'lug 31 The properposition of the pin88 is fixed when thebracket 38 is fitted to the sewing'machinen ing machine from eitherdriving device. The only opera:

tion required to switch from onedriving device to the other'is theoperation ofthe driver finger 63. 7

Having thus described the nature of the invention, what I claimhereinis: .L

1. A bracket adapted to support a hand-attachment from a lug designed tosecure the'motor'of a sewing machinetii the base thereof, said bracketcomprisingj a horizontal reach member; a first leg me mberdepending fromone end of ,saidr e ach member, said first leg member having a groove,the longitudinal axis of whichis parallel to the longitudinal dimensionof said first leg member, and said firstleg member also having an oblongaperture passing therethrough and connecting with said groove; a tongueformed on the side of said first leg member opposite from' said groove,and the said tongue and groove being parallel; a second leg memberdepending from the other end of said reach member, said, second legmember having an internallythreaded aperture extending into said secondleg member in a direction normal-to the longitudinal dimension thereof;and a tongue formed on one side of said second leg member, said lastnamed tongue extending in a direction parallel to the longitudinaldimension of said second leg, and said bracket being so constructed andarranged that the apertures in the first and second leg members havetheir axes normal to one another. a

2. A bracket adapted to support a hand-attachment from a lugdesignedtosecure the motor of a sewing machine to the base-thereof, saidbracket comprising; a horizontal reach member; a first leg memberdepending from one end of said reach membensaid first leg mem' herhaving a tongue and groove component, the longitudinal axis of'which isparallel to the longitudinal dimension of said first leg member, andsaid first leg member also having an oblong aperture passingtherethrough and connecting with said tongue and groove component; asecond tongue and groove component formed on p the side of said firstleg member opposite from said first second tongue and groove componentsbeing parallel; a second leg member depending from the other end of saidreachrmember, said secondleg member having an internally threadedaperture extending into said leg member in a direction normal to thelongitudinal dimension thereof; and a tongue and groove component formedon one side of said leg member, said last named tongue and groovevcomponent extending in a direction parallel to the longitudinaldimension of said second leg, and said bracket being so constructed andarranged that the apertures in the first and second leg members havetheir axes normal to one another.

Rrter n s i d i h fil of i P a UNITED STATES PATENTS 1,245,744 LeibnerNov. 6, 1917 1,520,949 Hemleb .L Dec. 30, 1924 2 ,055,285" Ford Sept.22, 1936 2,056,12 iPlumley et al. Sept. 29, 1936 2 298 5 P rkins. O t-2,657,892 Hoernel Nov. 3,. 1953 2, 4,228 Ba n a, Ja 1,956

